In the September 17, 2003, issue, Carsten Flensburg published a utility that printed the Address Resolution Protocol (ARP) table. The ARP table ties Ethernet addresses, which are unique for every Ethernet device, to IP addresses. Carsten’s utility printed all the ARP entries corresponding to a given network line name.
In this issue’s utility, Carsten enhances the ARP table print utility by giving it a command, Print ARP Table (PRTARPTBL), as well as a help panel group. He also adds a new command, Remove ARP Table Entry (RMVARPTBLE), which provides an interface to the iSeries ARP table in cache memory, allowing you to clear the cache without having to perform an IPL of the system. Together, PRTARPTBL and RMVARPTBLE provide a way for network administrators to research and repair iSeries ARP cache-related problems.